Can someone help me to answer this correctly, please, and explain it. Please answer these 2 short questions, I don't have more money to buy more questions. These 2 questions are different.

1. a.

1. b.

Write the net ionic equation for the following molecular equation. HNO3 is a strong electrolyte. HCN is a weak electrolyte. NaCN(aq)+HNO3(aq)NaNO3(aq)+HCN(aq) (Use the lowest possible coefficients. Be sure to specify states such as (aq) or (s). If a box is not needed, leave it blank.) When solid Mg metal is put into an aqueous solution of Pb(NO3)2, solid Pb metal and a solution of Mg(NO3)2 result. Write the net ionic equation for the reaction. (Use the solubility rules provided in the OWL Preparation Page to determine the solubility of compounds.) (Be sure to specify states such as (aq) or (s). If a box is not needed leave it blank.)